Wide steel strip for paper cutting blade and manufacturing method thereof
A wide-width steel and steel strip technology, which is applied to the wide-width steel strip for paper cutting blades and its manufacturing field, can solve the problems of low limit temperature, low precision, insufficient spheroidization rate, etc., achieve broad development prospects and ensure thickness accuracy. , the effect of high slitting precision
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Embodiment 1
[0065] Embodiment 1 (45Mn-2B):
[0066] (1) Preparation of converter steelmaking continuous casting billet:
[0067] The refined molten steel is poured into the tundish through the rotation of the rotary table, and then injected into the continuous casting slab crystallizer through double nozzles, and continuously cast into a continuous casting slab of 220*1250*2500mm; the chemical composition of the molten steel is shown in the following table:
[0068] serial number
C(%)
Si(%)
Mn(%)
P(%)
S(%)
Cr(%)
1
0.44
0.21
0.83
0.012
0.002
0.19
2
0.45
0.22
0.82
0.012
0.003
0.22
3
0.46
0.22
0.81
0.011
0.002
0.2
[0069] (2) Hot rolling:
[0070] The continuous casting slab obtained in step (1) is transported by the roller table to the heating furnace, heated to 1100±50°C, dephosphorized by high-pressure water and rolled for 13 passes, and then cooled by the laminar flow cooling syste...
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